Analysis

  • user interaction
    yes
  • max time kernel
    149s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20260513-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20260513-enlocale:en-usos:windows10-2004-x64systemwindows
  • submitted
    21/07/2026, 18:19

General

  • Target
    BBSAKv1.9.2_Installer.msi
  • Size 1.3MB
  • Sample260721-wyncpszshs
  • SHA256 f7dfc6796763a5bece671610081314f533aae6d7ed944a38119feac25f5ab8ed
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Signatures

  • Executes dropped EXE 4 IoCs
  • Loads dropped DLL 4 IoCs
  • Enumerates connected drives 3 TTPs 46 IoCs

    Attempts to read the root path of hard drives other than the default C: drive.

  • Drops file in Program Files directory 3 IoCs
  • Drops file in Windows directory 10 IoCs
  • Browser Information Discovery 1 TTPs

    Enumerate browser information.

  • Event Triggered Execution: Installer Packages 2 TTPs 1 IoCs
  • System Location Discovery: System Language Discovery 1 TTPs 4 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • System Time Discovery 1 TTPs 1 IoCs

    Adversary may gather the system time and/or time zone settings from a local or remote system.

  • Checks SCSI registry key(s) 3 TTPs 5 IoCs

    SCSI information is often read in order to detect sandboxing environments.

  • Checks processor information in registry 2 TTPs 2 IoCs

    Processor information is often read in order to detect sandboxing environments.

  • Enumerates system info in registry 2 TTPs 3 IoCs
  • Modifies data under HKEY_USERS 2 IoCs
  • Modifies registry class 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 44 IoCs
  • Suspicious behavior: NtCreateUserProcessBlockNonMicrosoftBinary 4 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of FindShellTrayWindow 37 IoCs
  • Suspicious use of SendNotifyMessage 32 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 20 IoCs
  • Uses Volume Shadow Copy service COM API

    The Volume Shadow Copy service is used to manage backups/snapshots.

Processes

  • C:\Windows\system32\msiexec.exe
    msiexec.exe /I C:\Users\Admin\AppData\Local\Temp\BBSAKv1.9.2_Installer.msi
    1⤵
    • Enumerates connected drives
    • Event Triggered Execution: Installer Packages
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of FindShellTrayWindow
    PID:1824
  • C:\Windows\system32\msiexec.exe
    C:\Windows\system32\msiexec.exe /V
    1⤵
    • Enumerates connected drives
    • Drops file in Program Files directory
    • Drops file in Windows directory
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:4796
    • C:\Windows\syswow64\MsiExec.exe
      C:\Windows\syswow64\MsiExec.exe -Embedding 1FFC934BCA5C092368E32910A3CB6443 C
      2⤵
      • Loads dropped DLL
      • System Location Discovery: System Language Discovery
      PID:536
    • C:\Windows\system32\srtasks.exe
      C:\Windows\system32\srtasks.exe ExecuteScopeRestorePoint /WaitForRestorePoint:2
      2⤵
        PID:3632
      • C:\Windows\syswow64\MsiExec.exe
        C:\Windows\syswow64\MsiExec.exe -Embedding 6C773873D09382FCAA474600567DC323
        2⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:3448
    • C:\Program Files\Google\Chrome\Application\chrome.exe
      "C:\Program Files\Google\Chrome\Application\chrome.exe"
      1⤵
      • Checks processor information in registry
      • Enumerates system info in registry
      • Modifies data under HKEY_USERS
      • Modifies registry class
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious behavior: NtCreateUserProcessBlockNonMicrosoftBinary
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of SendNotifyMessage
      • Suspicious use of WriteProcessMemory
      PID:4512
      • C:\Program Files\Google\Chrome\Application\chrome.exe
        "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=crashpad-handler "--user-data-dir=C:\Users\Admin\AppData\Local\Google\Chrome\User Data" /prefetch:4 --monitor-self-annotation=ptype=crashpad-handler "--database=C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Crashpad" "--metrics-dir=C:\Users\Admin\AppData\Local\Google\Chrome\User Data" --url=https://clients2.google.com/cr/report --annotation=channel= --annotation=plat=Win64 --annotation=prod=Chrome --annotation=ver=140.0.7339.81 --initial-client-data=0x118,0x11c,0x120,0xf4,0x124,0x7ffe8c67c728,0x7ffe8c67c734,0x7ffe8c67c740
        2⤵
          PID:2680
        • C:\Program Files\Google\Chrome\Application\chrome.exe
          "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=gpu-process --no-pre-read-main-dll --force-high-res-timeticks=disabled --gpu-preferences=SAAAAAAAAADgAAAIAAAAAAAAAAAAAGAAAQAAAAAAAAAEAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAQAAAAAAAAABAAAAAAAAAACAAAAAAAAAAIAAAAAAAAAA== --metrics-shmem-handle=1704,i,4782759884149534797,5408147961472507515,262144 --field-trial-handle=1896,i,16831748677998722302,13779735606637482251,262144 --variations-seed-version=20260513-090056.789000-production --mojo-platform-channel-handle=1892 /prefetch:2
          2⤵
            PID:2216
          • C:\Program Files\Google\Chrome\Application\chrome.exe
            "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=utility --utility-sub-type=network.mojom.NetworkService --lang=en-US --service-sandbox-type=none --force-high-res-timeticks=disabled --metrics-shmem-handle=1616,i,6072831633709124562,15121310062781923225,524288 --field-trial-handle=1896,i,16831748677998722302,13779735606637482251,262144 --variations-seed-version=20260513-090056.789000-production --mojo-platform-channel-handle=2136 /prefetch:3
            2⤵
            • System Time Discovery
            PID:640
          • C:\Program Files\Google\Chrome\Application\chrome.exe
            "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=utility --utility-sub-type=storage.mojom.StorageService --lang=en-US --service-sandbox-type=service --force-high-res-timeticks=disabled --metrics-shmem-handle=2424,i,8122927204769511584,16822322232438723221,524288 --field-trial-handle=1896,i,16831748677998722302,13779735606637482251,262144 --variations-seed-version=20260513-090056.789000-production --mojo-platform-channel-handle=2612 /prefetch:8
            2⤵
              PID:2768
            • C:\Program Files\Google\Chrome\Application\chrome.exe
              "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=renderer --enable-dinosaur-easter-egg-alt-images --force-high-res-timeticks=disabled --video-capture-use-gpu-memory-buffer --lang=en-US --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=6 --metrics-shmem-handle=3268,i,4328581743116825455,17251215911650671131,2097152 --field-trial-handle=1896,i,16831748677998722302,13779735606637482251,262144 --variations-seed-version=20260513-090056.789000-production --mojo-platform-channel-handle=3280 /prefetch:1
              2⤵
                PID:4440
              • C:\Program Files\Google\Chrome\Application\chrome.exe
                "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=renderer --enable-dinosaur-easter-egg-alt-images --force-high-res-timeticks=disabled --video-capture-use-gpu-memory-buffer --lang=en-US --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=5 --metrics-shmem-handle=3284,i,8246601808312880451,3037883777955370481,2097152 --field-trial-handle=1896,i,16831748677998722302,13779735606637482251,262144 --variations-seed-version=20260513-090056.789000-production --mojo-platform-channel-handle=3324 /prefetch:1
                2⤵
                  PID:4444
                • C:\Program Files\Google\Chrome\Application\chrome.exe
                  "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=renderer --extension-process --enable-dinosaur-easter-egg-alt-images --force-high-res-timeticks=disabled --disable-gpu-compositing --video-capture-use-gpu-memory-buffer --lang=en-US --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=7 --metrics-shmem-handle=4016,i,6670496677329447887,11500408699398918682,2097152 --field-trial-handle=1896,i,16831748677998722302,13779735606637482251,262144 --variations-seed-version=20260513-090056.789000-production --mojo-platform-channel-handle=4472 /prefetch:2
                  2⤵
                    PID:964
                  • C:\Program Files\Google\Chrome\Application\chrome.exe
                    "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=renderer --enable-dinosaur-easter-egg-alt-images --force-high-res-timeticks=disabled --disable-gpu-compositing --video-capture-use-gpu-memory-buffer --lang=en-US --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=8 --metrics-shmem-handle=4756,i,10193827568025737225,7173444327224276550,2097152 --field-trial-handle=1896,i,16831748677998722302,13779735606637482251,262144 --variations-seed-version=20260513-090056.789000-production --mojo-platform-channel-handle=4772 /prefetch:1
                    2⤵
                      PID:552
                    • C:\Program Files\Google\Chrome\Application\chrome.exe
                      "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=utility --utility-sub-type=chrome.mojom.ProcessorMetrics --lang=en-US --service-sandbox-type=none --force-high-res-timeticks=disabled --metrics-shmem-handle=5560,i,5639239407513809780,12202188169194902925,524288 --field-trial-handle=1896,i,16831748677998722302,13779735606637482251,262144 --variations-seed-version=20260513-090056.789000-production --mojo-platform-channel-handle=5512 /prefetch:8
                      2⤵
                        PID:2348
                    • C:\Program Files\Google\Chrome\Application\140.0.7339.81\elevation_service.exe
                      "C:\Program Files\Google\Chrome\Application\140.0.7339.81\elevation_service.exe"
                      1⤵
                        PID:3088
                      • C:\Windows\system32\svchost.exe
                        C:\Windows\system32\svchost.exe -k LocalSystemNetworkRestricted -p -s NgcSvc
                        1⤵
                          PID:740
                        • C:\Windows\system32\vssvc.exe
                          C:\Windows\system32\vssvc.exe
                          1⤵
                          • Checks SCSI registry key(s)
                          PID:3088
                        • C:\Program Files (x86)\BBSAK\BBSAK.exe
                          "C:\Program Files (x86)\BBSAK\BBSAK.exe"
                          1⤵
                          • Executes dropped EXE
                          • Suspicious behavior: EnumeratesProcesses
                          • Suspicious use of WriteProcessMemory
                          PID:3776
                          • C:\Program Files (x86)\BBSAK\javaloader.exe
                            "javaloader.exe" -u deviceinfo
                            2⤵
                            • Executes dropped EXE
                            • System Location Discovery: System Language Discovery
                            • Suspicious use of SetWindowsHookEx
                            PID:4320
                          • C:\Program Files (x86)\BBSAK\javaloader.exe
                            "javaloader.exe" -u deviceinfo
                            2⤵
                            • Executes dropped EXE
                            • System Location Discovery: System Language Discovery
                            • Suspicious use of SetWindowsHookEx
                            PID:5028
                        • C:\Program Files (x86)\BBSAK\BBSAK.exe
                          "C:\Program Files (x86)\BBSAK\BBSAK.exe"
                          1⤵
                          • Executes dropped EXE
                          PID:4524

                        Network

                              MITRE ATT&CK Enterprise v16

                              Replay Monitor

                              Loading Replay Monitor...

                              Downloads

                              e596549.rbs

                              • Path C:\Config.Msi\e596549.rbs
                              • Size 9KB
                              • SHA256 5520259b82409f259bea98b9d789abda99b595c5272298d15f956eb04fc57a58
                              • MD5 SHA1 SHA512 SSDEEP TLSH

                              BBSAK.exe

                              • Path C:\Program Files (x86)\BBSAK\BBSAK.exe
                              • Size 1.4MB
                              • SHA256 dcd13e8a6ba6b2ae69a47daba264c0065f27b8dd39d0b2b1345d7e7ca83daff6
                              • MD5 SHA1 SHA512 SSDEEP TLSH

                              Language.txt

                              • Path C:\Program Files (x86)\BBSAK\Language.txt
                              • Size 2KB
                              • SHA256 00243eb1c28f5599c40ff1185f0d15e9fd6996849ce45574e564025e77decb27
                              • MD5 SHA1 SHA512 TLSH

                              javaloader.exe

                              • Path C:\Program Files (x86)\BBSAK\javaloader.exe
                              • Size 286KB
                              • SHA256 5a6a587e1c2e55669de29271d5916dcf150c3a4867cf3a6f33cb4b0ebd18ac05
                              • MD5 SHA1 SHA512 SSDEEP TLSH

                              BookmarkMergedSurfaceOrdering

                              • Path C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Default\BookmarkMergedSurfaceOrdering
                              • Size 6B
                              • SHA256 4489f9e3e454748b3521eb214e0a5694d562cff3d9ff511cb456953c8f534c00
                              • MD5 SHA1 SHA512

                              BrowsingTopicsState

                              • Path C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Default\BrowsingTopicsState
                              • Size 414B
                              • SHA256 2842c627be72f182774bec3633594cc9ce4b9e5d962307ebb24e423a69616384
                              • MD5 SHA1 SHA512 TLSH

                              Network Persistent State

                              • Path C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Default\Network\Network Persistent State
                              • Size 1KB
                              • SHA256 b8e3bfab84a64246a60d56a4920fe12ce6f2cc9c5755cde7989861fc19f50fca
                              • MD5 SHA1 SHA512 TLSH

                              SCT Auditing Pending Reports

                              • Path C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Default\Network\SCT Auditing Pending Reports
                              • Size 2B
                              • SHA256 4f53cda18c2baa0c0354bb5f9a3ecbe5ed12ab4d8e11ba873c2f11161202b945
                              • MD5 SHA1 SHA512

                              TransportSecurity

                              • Path C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Default\Network\TransportSecurity
                              • Size 523B
                              • SHA256 782cc3c77057cc698e4eb420af69f37d52b7048e3b3d0870af2f619251df8122
                              • MD5 SHA1 SHA512 TLSH

                              Preferences

                              • Path C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Default\Preferences
                              • Size 11KB
                              • SHA256 f5324343c2596e9587f72de36130663388b90e1617d5626033fa2f07cd00bd78
                              • MD5 SHA1 SHA512 SSDEEP TLSH

                              Secure Preferences

                              • Path C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Default\Secure Preferences
                              • Size 17KB
                              • SHA256 93a969d5494520a313d59c847d3ee10e51ce49e2c8cea4f6ea38850cfab527d0
                              • MD5 SHA1 SHA512 SSDEEP TLSH

                              the-real-index

                              • Path C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Default\Service Worker\ScriptCache\index-dir\the-real-index
                              • Size 120B
                              • SHA256 34ae856f1866be31c2fb2a82f801e8d6ae12ee606762d55ec4b8abcb24733590
                              • MD5 SHA1 SHA512 TLSH

                              the-real-index~RFe58f170.TMP

                              • Path C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Default\Service Worker\ScriptCache\index-dir\the-real-index~RFe58f170.TMP
                              • Size 96B
                              • SHA256 a9f2e5fd2b015a4bb1f737d311d1d14193f63e205185b7223b3557bba2eb6189
                              • MD5 SHA1 SHA512 TLSH

                              Local State

                              • Path C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Local State
                              • Size 233KB
                              • SHA256 9236f6c9708f9ef69e3420a76836149534139fc4da30460b5243f917f75c03c5
                              • MD5 SHA1 SHA512 SSDEEP TLSH

                              Local State

                              • Path C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Local State
                              • Size 115KB
                              • SHA256 47c58df9ee3486a0f9ca067c166ff4e14656c9a87d83afe09e2714292ede6d3d
                              • MD5 SHA1 SHA512 SSDEEP TLSH

                              data_1

                              • Path C:\Users\Admin\AppData\Local\Google\Chrome\User Data\ShaderCache\data_1
                              • Size 264KB
                              • SHA256 b1e963d702392fb7224786e7d56d43973e9b9efd1b89c17814d7c558ffc0cdec
                              • MD5 SHA1 SHA512 SSDEEP

                              MSIFE55.tmp

                              • Path C:\Users\Admin\AppData\Local\Temp\MSIFE55.tmp
                              • Size 221KB
                              • SHA256 ba56a2fa13e5dae48b6d74a8fa40f2f44473b386e71ba1e7ec2ded90ad56bb8b
                              • MD5 SHA1 SHA512 SSDEEP TLSH

                              e596548.msi

                              • Path C:\Windows\Installer\e596548.msi
                              • Size 1.3MB
                              • SHA256 f7dfc6796763a5bece671610081314f533aae6d7ed944a38119feac25f5ab8ed
                              • MD5 SHA1 SHA512 SSDEEP TLSH

                              metadata-2

                              • Path \??\GLOBALROOT\Device\HarddiskVolumeShadowCopy2\System Volume Information\SPP\metadata-2
                              • Size 24.1MB
                              • SHA256 8ff7cf3f886389079961833881cde2a6015d9afafd9799297439910b68f7e800
                              • MD5 SHA1 SHA512 SSDEEP TLSH

                              {4b241f1e-3537-48ff-ac0f-cf729351ad87}_OnDiskSnapshotProp

                              • Path \??\Volume{fef0c820-0000-0000-0000-d01200000000}\System Volume Information\SPP\OnlineMetadataCache\{4b241f1e-3537-48ff-ac0f-cf729351ad87}_OnDiskSnapshotProp
                              • Size 6KB
                              • SHA256 387bf86a2d126cf65993a0499ad8c26d090322761ac2d4aaa3616f77befd0527
                              • MD5 SHA1 SHA512 SSDEEP TLSH

                              memory/3776-185-0x000000001CD90000-0x000000001CDDC000-memory.dmp

                              memory/3776-184-0x0000000000FA0000-0x0000000000FA8000-memory.dmp

                              memory/3776-183-0x000000001CB30000-0x000000001CBCC000-memory.dmp

                              memory/3776-182-0x000000001BAE0000-0x000000001BFAE000-memory.dmp

                              memory/3776-181-0x000000001B530000-0x000000001B5D6000-memory.dmp

                              memory/3776-193-0x00000000204B0000-0x00000000204D4000-memory.dmp